Electrode insulator



FIG. 1 is a front end perspective view of an electrode insulator showing my new design;

FIG. 2 is a rear end perspective view thereof;

FIG. 3 is a front end view thereof;

FIG. 4 is a side view thereof; and,

FIG. 5 is a back view thereof. 

I claim the ornamental design for an electrode insulator, as shown and described. 